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.

The good life is one inspired by love and guided by knowledge.

Dogmatism and skepticism are both, in a sense, absolute philosophies one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance.

The degree of one's emotions varies inversely with one's knowledge of the facts.

The good life is one inspired by love and guided by knowledge.