“You never know how useful even seemingly insignificant knowledge can be.”
Source: Think Big (1996), p. 212
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Ben Carson 191
17th and current United States Secretary of Housing and Urb… 1951Related quotes

"4th Foundational Falsehood of Creationism" https://www.youtube.com/watch?v=80nhqGfN6t8, Youtube (December 25, 2007)
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“If you are always trying to be normal, you will never know how amazing you can be.”

“It's funny how someone's perception of you can be formed without you even knowing it.”
Source: Dreamland (2000)

“You can never do a kindness too soon, for you never know how soon it will be too late.”
Culture
1860s, The Conduct of Life (1860)
Variant: You cannot do a kindness too soon, for you never know how soon it will be too late.

Robert Lynd (1926) The orange tree: a volume of essays. p.60. The last sentence "Knowledge is power only if a man knows what facts not to bother about." was cited in some sources in the 1960s, such as August Kerber (1968) Quotable quotes on education. p.190, and in multiple other sources ever since.

The Fourfold Treasure (1871) No. 991 http://www.spurgeon.org/sermons/0991.htm