Who said "What a man gives to himself, nobody can take from him."?

This quote is attributed to Demosthenes.

What a man gives to himself, nobody can take from him. - Demosthenes

"What a man gives to himself, nobody can take from him."

Demosthenes Strength

Orator Statesman Ancient Greece 384–322

"Nothing is so unbelievable that oratory cannot make it acceptable."

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"The man who makes no mistakes does not try new things."

"Courage is the only virtue you cannot fake."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."