Do you believe in immortality? No, and one life is enough for me.

I'm more interested in the future than in the past, because the future is where I intend to live.

Hunger, love, pain, fear are some of those inner forces which rule the individual's instinct for self preservation.

Weak people revenge. Strong people forgive. Intelligent People Ignore.

One should not pursue goals that are easily achieved. One must develop an instinct for what one can just barely achieve through one’s greatest efforts.

Great spirits have always encountered violent opposition from mediocre minds.

Science has brought forth this danger, but the real problem is in the minds and hearts of men.