  In order to celebrate this double birthday the journal Foundations of Physics
publishes a topical collection `Pilot-wave and beyond' on the developments that
have followed the pioneering works of Louis de Broglie and David Bohm on
quantum foundations. This topical collection includes contributions from
physicists and philosophers debating around the world about the scientific
legacy of Bohm and de Broglie concerning the interpretation and understanding
of quantum mechanics. In these forewords we give a general review of the
historical context explaining how de Broglie and Bohm developed their
interpretations of quantum mechanics. We further analyze the relationship
between these two great thinkers and emphasize the role of several
collaborators and continuators of their ontological approach to physics.
