Destroy the seed of evil, or it will grow up to your ruin.
Little by little does the trick.
Little friends may prove great friends.
Don't let your special character and values, the secret that you know and no one else does, the truth - don't let that get swallowed up by the great chewing complacency.
Beware lest you lose the substance by grasping at the shadow.
A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him.
Men often applaud an imitation and hiss the real thing.