It is impossible for any created good to constitute man’s happiness. For happiness is the perfect good, which quiets the appetite altogether since it would not be the last end if something yet remained to be desired. Now the object of the will, that is, of man’s appetite, is the universal good, just as the object of the intellect is the universal true. Hence it is evident that nothing can quiet man’s will except the universal good. This is to be found not in any creature, but in God alone, because every creature has goodness by participation. Therefore God alone can satisfy the will of man.

When... the thing in which there is good is nobler than the soul itself, in which is the idea understood, by comparison with such a thing the will is higher than the intellect. But when the thing which is good is less noble than the soul, then even in comparison with the thing the intellect is higher than the will. Therefore the love of God is better than the knowledge of God; but, on the contrary, the knowledge of corporeal things is better than the love of them. Absolutely, however, the intellect is nobler than the will.

As diamond cuts diamond, and one hone smoothes a second, all the parts of intellect are whetstones to each other; and genius, which is but the result of their mutual sharpening, is character, too.

Spiritual knowledge cannot be communicated from one intellect to another, but must be sought for in the spirit of God.

Your greatness is measured by your kindness - Your education and intellect by your modesty - Your ignorance is betrayed by your suspicions and prejudices - Your real caliber is measured by the consideration and tolerance you have for others.

Pure friendship is something which men of an inferior intellect can never taste.

A man of intellect is lost unless he unites energy of character to intellect. When we have the lantern of Diogenes we must have his staff.

The only freedom worth possessing is that which gives enlargement to a people’s energy, intellect and virtues.

The only freedom worth possessing is that which gives enlargement to a people's energy, intellect and virtues... Progress, the growth of intelligence and power, is the end and boon of liberty; and, without this, a people may have the name, but want the substance and spirit of freedom.

Nothing is more injurious to the character and to the intellect than the suppression of generous emotion.

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

Truth travels down from the heights of philosophy to the humblest walks of lie, and up from the simplest perceptions of an awakened intellect to the discoveries which almost change the face of the world. At every stage of its progress it is genial, luminous, creative.

Our best hope for the future is that the intellect - the scientific spirit, reason - should in time establish a dictatorship over the human mind. The very nature of reason is a guarantee that it would not fail to concede to human emotions, and to all that is determined by them, the position to which they are entitled. But the common pressure exercised by such a domination of reason would prove to be the strongest unifying force among men, and would prepare the way for further unifications. Whatever, like the ban laid upon thought by religion, opposes such a development is a danger for the future of mankind.

Conceit is just as natural a thing to human minds as a centre is to a circle. But little-minded people’s thoughts move in such small circles that five minute’s’ conversation gives you an arc long enough to determine their whole curve. An arc in the movement of a large intellect does not differ sensibly from a straight line.

Never, never, never will the intellect possess a monopoly over the heart.

A sound intellect will refuse to judge men simply by their outward actions; we must probe the inside and discover what springs set men in motion.

The sum and total of man’s ignorance lie in the misconception of the power that surround his identity. He must realize that though his intellect is but a grain in the sands of knowledge, yet hid in that grain is the essence of the Whole.

No true manhood can be trained by a merely intellectual process. You cannot train men by the intellect alone; you must train them by the heart.

The great and good do not die even in this world. Embalmed in books, their spirits walk abroad. The book is a living voice. It is an intellect to which one still listens.

It is evident that our mind, insofar as it understands, is an eternal mode of thought, which is determined by another eternal mode of thought, and this again by another, and so on infinitum, so that all taken together from the eternal and infinite intellect of God.