For the man sound of body and serene of mind there is no such thing as bad weather every day has its beauty, and storms which whip the blood do but make it pulse more vigorously.

The sentence argues that “bad weather” is largely a matter of disposition. If one is physically well (“sound of body”) and mentally balanced (“serene of mind”), each day’s conditions can be perceived as aesthetically or morally valuable—“every day has its beauty.” The final clause reframes storms not as threats but as invigorating forces that intensify vitality (“whip the blood…pulse more vigorously”). In effect, the quote promotes a stoic, health-grounded optimism: resilience and attentiveness transform external discomfort into heightened experience. It also hints at a Romantic sensibility in which nature’s violence can be energizing rather than merely destructive.