The only good is knowledge, and the only evil is ignorance. Diogenes (circa 412 – 323 B.C.E.)

The only good is knowledge, and the only evil is ignorance. Diogenes (circa 412 – 323 B.C.E.)
The first step to self-knowledge is self-distrust. Nor can we attain to any kind of knowledge, except by a like process. Diogenes (circa 412 – 323 B.C.E.)