Science makes no claim to infallibility; it leaves that claim to be made by theologians.
In regard to infallibility, I never claimed it; God alone is infallible. His word is true, and in Him is no variableness, or shadow of turning.
knowledge, absolutely sure of its infallibility, is faith
I was no pope - I could not boast infallibility ...
Infallibility and invincible ignorance are the same thing.
It is courage the world needs, not infallibility...courage is always the surest wisdom.