“Good-humor is a philosophic state of mind; it seems to say to Nature that we take her no more seriously than she takes us. I maintain that one should always talk of philosophy with a smile.”
Source: The Varieties of Religious Experience
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William James 246
American philosopher, psychologist, and pragmatist 1842–1910Related quotes

"Philosophy" (1929) as quoted by Nils-Eric Sahlin, The Philosophy of F. P. Ramsey (1990)

Testimony before the US Senate Committee on Environment and Public Works (28 September 2005)
Context: I want to state emphatically that nothing in my remarks should be taken to imply that we can ignore our environment, or that we should not take climate change seriously. On the contrary, we must dramatically improve our record on environmental management. That is why a focused effort on climate science, aimed at securing sound, independently verified answers to policy questions, is so important now.

Book 2, Chapter 4 (p. 561)
The Dragon in the Sword (1986)
“We need to the right thing. Take this seriously, not to verbalize about it, and not to talk.”
Source: Fort Portal Bishop calls for more environmental protection awareness https://www.ntv.co.ug/ug/news/national/fort-portal-bishop-calls-for-more-environmental-protection-awareness-3328498 (March 19, 2021)