Man errs as long as he strives.

Knowing is not enough; we must apply. Willing is not enough; we must do.

Whoever strives with all his might, that man we can redeem.

Wellbeing is attained by little and little, and nevertheless is no little thing itself.

-- Zeno of Citium

There is no substitute for hard work.

-- Thomas Edison

I never did anything by accident, nor did any of my inventions come by accident; they came by work.

-- Thomas Edison

When you are earnest, wisdom emerges. When you are half-hearted, complaints emerge. When you are careless, excuses emerge.

-- Takeda Shingen

Life is like unto a long journey with a heavy burden. Let thy step be slow and steady, that thou stumble not.

-- Tokugawa Ieyasu

If you do not know you may fall halfway through your work, you will not fall halfway through.

-- Sakamoto Ryōma