A bird in a cage is not half ...

A bird in a cage is not half a bird.
A bird in a cage is not half a bird.

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

Every artist dips his brush in his own soul, and paints his own nature into his pictures.
It is one of the severest tests of friendship to tell your friend his faults. So to love a man that you cannot bear to see a stain upon him, and to speak painful truth through loving words, that is friendship.
We should not judge people by their peak of excellence; but by the distance they have traveled from the point where they started.
There is no friendship, no love, like that of the parent for the child.
No man can tell another his faults so as to benefit him, unless he loves him.