[Mathematics] is an independent world created out of pure intelligence.

A cheerful life is what the Muses love. A soaring spirit is their prime delight.

Yet sometimes, when the secret cup Of still and serious thought went round, It seemed as if he drank it up, He felt with spirit so profound.

Give unto me, made lowly wise, The spirit of self-sacrifice; The confidence of reason give, And in the light of truth thy bondman let me live!

The childhood of today is the manhood of tomorrow

There is a luxury in self-dispraise; And inward self-disparagement affords To meditative spleen a grateful feast.

As high as we have mounted in delight, In our dejection do we sink as low.