Mozart's music is so pure and beautiful that I see it as a reflection of the inner beauty of the universe.

Man, surrounded by facts, permitting himself no surprise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more securely.

The greatest knowledge a person can possess is the address of the local library.

My mind is my laboratory.

What is essential in the life of a man of my kind is what he thinks and how he thinks, and not what he does or suffers.

The really valuable thing in the pageant of human life seems to me not the political state, but the creative, sentient individual, the personality; it alone creates the noble and the sublime, while the herd as such remains dull in thought and dull in feeling.

The normal objective of my thought affords no insight into the dark places of human will and feeling.