The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack of will.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

Self-respect leads to self-discipline. When you have both firmly under your belt, that's real power.

The best people possess a feeling for beauty, the courage to take risks, the discipline to tell the truth, the capacity for sacrifice. Ironically, their virtues make them vulnerable; they are often wounded, sometimes destroyed.

There is a wisdom in this beyond the rules of physic. A man’s own observation, what he finds good of and what he finds hurt of, is the best physic to preserve health.

Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.

Teach the ignorant as much as you can; society is culpable in not providing a free education for all and it must answer for the night which it produces. If the soul is left in darkness sins will be committed. The guilty one is not he who commits the sin, but he who causes the darkness.

The desire of power in excess caused the angels to fall; the desire of knowledge in excess caused man to fall.

Opinion is the medium between knowledge and ignorance.

There is much pleasure to be gained from useless knowledge.