Where the human mind is not hindered by circumstances, or oppressed with cares, it ever loves to rise and mount; and the steeper the difficulty, the more heartily the mind engages with it; for it burns to possess denied knowledge, and to tread forbidden ground; longs also to know secret things, and glories in grappling with difficulty: and the longer it sticks in the knotty point, provided there is hope that aught approaching to perfection of knowledge be attainable, the more earnest and burning do its efforts become.