It does not require great learning to be a Christian and be convinced of the truth of the Bible. It requires only an honest heart and a willingness to obey God. Albert Barnes
A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms agains himself. He makes his failure certain by himself being the first person to be convinced of it. Ambrose Bierce
Without a notion of the transcendental, human beings would, indeed, be animals; however, only fools can be convinced of it, and only degenerates need such a conviction. Franz Grillparzer
But my dreaming self refuses to be consoled. It continues to wander, aimless, homeless, alone. It cannot be convinced of its safety by any evidence drawn from my waking life. Margaret Atwood
We do not want to be beginners [at prayer]. but let us be convinced of the fact that we will never be anything but beginners, all our life! Thomas Merton
To have humanism we must first be convinced of our humanity. As we move further into decadence this becomes more difficult. Thomas Pynchon