The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.
— Daniel J. Boorstin

obstacles are those frightful things you see when you take your eyes off your goals.
Sydney Smith obstacle quote

Obstacle quote image
Picture quote about Obstacle

It is the constant and determined effort that breaks down resistance and sweeps away all obstacles.
— Claude M. Bristol

Obstacles cannot crush me. Every obstacle yields to stern resolve.
— Leonardo da Vinci

A human being who strives for something great considers everyone he meets on his way either as a means or as a delay and obstacle - or as a temporary resting place.
— obstacle quotation by Friedrich Nietzsche