Leonhard Euler

Berlin

Meadowdale Beach Park - Lunds Gulch (wta.org) This is a great all-season hike featuring beautiful mature second growth forest and beach access. Hike down a lushly forested ravine with a babbling creek, home to many species of salmon and trout. Follow the creek to its estuary as it empties into Puget Sound. If you extend your hike to the beach, breathe in the serene panorama of Brown’s Bay, Puget Sound, the islands, and the Olympic Mountains. Watch the seabirds and go beachcombing to look for crabshells, anemones, and other treasures.

il cessa de calculer et de vivre— … he ceased to calculate and to live. Marquis de Condorcet on the death of Euler
Read Euler, read Euler, he is the master of us all. Pierre-Simon Laplace

Leonhard Euler (Wikipedia) Leonhard Euler (/ˈɔɪlər/ OY-lər, German: [ˈleːɔnhaʁt ˈʔɔʏlɐ], Swiss Standard German: [ˈleːɔnhart ˈɔʏlər]; 15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician, and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in many other branches of mathematics such as analytic number theory, complex analysis, and infinitesimal calculus. He introduced much of modern mathematical terminology and notation, including the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.