Don't feel bad for making decisions that upset other people. you're not responsible for their happiness, you're responsible for yours.

Whenever you have eliminated the impossible, whatever remains, however improbable, must be the truth.

The laws of science do not distinguish between the past and the future.

Peace is not merely the absence of war; it is the presence of justice.

You are never given a wish without also being given the power to make it come true. You may have to work for it, however.

As we are liberated from our own fear, our presence automatically liberates others

Man serves the interests of no creature except himself.