He was the defiant homesteader, the crusty senior member of a research team who understood Algol and Fortran but couldn't read the secrets of his own heart. 1972, Thomas M. Disch, 334
Algol, on the other hand, introduced the notion of block structure, in which the programmer could group lists of statements, effectively creating one instruction out of a list of instructions. 2004, Edward G. Nilges, Build Your Own .NET Language and Compiler, Apress, →ISBN, page 2: