Arnol'd's ODE book distinguishes itself from the dozens of others by its
emphasis on the qualitative and geometric theory rather than the
quantitative theory. His aim is to analyze and describe the behavior of
systems, rather than providing a collection of unexplained tricks for
solving specific equations. Thus, there are plenty of examples and
figures, but no complicated formulas. Arnol'd is known by mathematicians
and students both for his mathematical skills and for his talent for
mathematical writing.