For a man to act himself, he ...

For a man to act himself, he must be perfectly free; otherwise he is in danger of losing all sense of responsibility or of self- respect.
For a man to act himself, he must be perfectly free; otherwise he is in danger of losing all sense of responsibility or of self- respect.

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

Many men go fishing all of their lives without knowing that it is not fish they are after.
If one advances confidently in the direction of his dream, and endeavors to live the life which he had imagines, he will meet with a success unexpected in common hours.
Ignorance and bungling with love are better than wisdom and skill without.
The most I can do for my friend is simply be his friend.
A man cannot be said to succeed in this life who does not satisfy one friend.