The difference between animals and humans is that animals change themselves for the environment, but humans change the environment for themselves.

Whoever, to whatever purpose or extent, initiates the use of force, is a killer acting on the premise of death in a manner wider than murder: the premise of destroying man's capacity to live.

There can be no compromise on moral principles.

One can study what exists and how consciousness functions; but one cannot analyze (or “prove”) existence as such, or consciousness as such. These are irreducible primaries. (An attempt to “prove” them is self-contradict ory: it is an attempt to “prove” existence by means of nonexistence, and consciousness by means of unconsciousness .)

Indiscriminate tolerance and indiscriminate condemnation are not two opposites: they are two variants of the same evasion. To declare that “everybody is white” or “everybody is black” or “everybody is neither white nor black, but gray,” is not a moral judgment, but an escape from the responsibility of moral judgment.

One can't love man without hating most of the creatures who pretend to bear his name.

Psychologically, the choice "to think or not" is the choice "to focus or not." Existentially, the choice "to focus or not" is the choice "to be conscious or not." Metaphysically, the choice "to be conscious or not" is the choice of life or death.