Men often become what they ...

Men often become what they believe themselves to be. If I believe I cannot do something,it makes me incapable of doing it. When I believe I can,I acquire the ability to do it even if I didn’t have it in the beginning.’\
Men often become what they believe themselves to be. If I believe I cannot do something,it makes me incapable of doing it. When I believe I can,I acquire the ability to do it even if I didn’t have it in the beginning.’"Mahatma Gandhi

More phrases

All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
I know but one freedom and that is the freedom of the mind.
 Antoine de Saint-Exupéry
Freedom is not worth having if it does not connote freedom to err.
The amount of happiness that you have depends on the amount of freedom you have in your heart.
 Thích Nhất Hạnh
Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.

Quotes from the same author

Happiness is when what you think, what you say, and what you do are in harmony.
Strength does not come from physical capacity. It comes from an indomitable will.
Be the change that you want to see in the world.
It is unwise to be too sure of one's own wisdom. It is healthy to be reminded that the strongest might weaken and the wisest might err.
It is the quality of our work which will please God, not the quantity.